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<p>A magnetically separable nanocatalyst [Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>-DIABA-NiCl<sub>2</sub>] was synthesized by immobilizing nickel on surface-modified iron oxide nanoparticles functionalized with 3,4-diaminobutanoic acid (DIABA). The preparation involved coating Fe<sub>3</sub>O<sub>4</sub> with SiO<sub>2</sub>, functionalizing it, and coordinating NiCl<sub>2</sub>. Characterization techniques included FT-IR, XRD, SEM, TEM, VSM, BET, EDX, and TGA. The catalyst was tested for synthesizing diaryl sulfone derivatives through a three-component reaction with aryl boronic acid, K<sub>2</sub>S<sub>2</sub>O<sub>5</sub>, and aryl iodides, using K<sub>2</sub>CO<sub>3</sub> as a base and glycerol as a solvent at 100&#xa0;°C for 3&#xa0;h. This method achieved excellent yields under mild conditions, showcasing the catalyst’s broad substrate scope, high selectivity, and reusability, making it a sustainable option for diaryl sulfone synthesis.</p> Graphical Abstract <p></p>

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A Recyclable Nickel-Based Magnetic Nanocatalyst for Efficient and Ecofriendly Synthesis of Diaryl Sulfones

  • 期刊论文

  • 发表日期：

    2025年7月16日

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  • Yuchen Sun,
  • Ahmad Ewadi

摘要

A magnetically separable nanocatalyst [Fe3O4@SiO2-DIABA-NiCl2] was synthesized by immobilizing nickel on surface-modified iron oxide nanoparticles functionalized with 3,4-diaminobutanoic acid (DIABA). The preparation involved coating Fe3O4 with SiO2, functionalizing it, and coordinating NiCl2. Characterization techniques included FT-IR, XRD, SEM, TEM, VSM, BET, EDX, and TGA. The catalyst was tested for synthesizing diaryl sulfone derivatives through a three-component reaction with aryl boronic acid, K2S2O5, and aryl iodides, using K2CO3 as a base and glycerol as a solvent at 100 °C for 3 h. This method achieved excellent yields under mild conditions, showcasing the catalyst’s broad substrate scope, high selectivity, and reusability, making it a sustainable option for diaryl sulfone synthesis.

Graphical Abstract